Means for determining the area and angle of openings in perforated spray heads



Get. 23, 1928. 1,688,427

K. K. LEDIG MEANS FOR DETERMINING THE AREA AND ANGLE OF OPENINGS IN PERFORATED SPRAY HEADS Filed Jan. '7, 1925 2 Sheets-Sheet l ATTORNEY Oct. 23, 1928.

KQ-K. LEDIG MEANS FOR DETERMINING THE AREA AND ANGLE OF OPENINGS IN PERFORATED SPRAY HEADS 2 Shets-Sheet 2 Filed Jan. 7, 1925 Q 1 ful I INVEFITQR ATTORNEY Patented Get. 23, 191.4

UNITED STATES PATENT OFF-ICE.

KURT K. Lnnre, or NEWARK, ivnw JERSEY, ASSIGNOR TO AMERICAN PLATINUM.

WORKS, 015 NEWARK, NEW JERSEY, A CORPORATION OF NEW JERSEY.

MEANS FOR DETERMINING Application filed January THE AREA AND ANGLE OF OPENINGS IN PERFORATED SPRAY HEADS.

This invention relates to apparatus for determining the aggregate of perforations in a spray like and likewise visibly area of a plurality head, nozzle or the disclosing any departure from parallelism or angularity which may occur in any individual orifice in the group.

Such perforate heads or nozzles are frequently required in in esses where it is desired to quite anufacturing procextrude semiesolid,

viscous or unctuous substances in fine streams or filaments,'as for instance in ture of artificial silk wher filaments (.003 to .006

the manuface a plurality of fine in diameter) are extruded from a nozzle containing a definite number of perforations.

The difliculty of calibrating such small orifices will be apparent, and also the constant attrition 0 the fact that f streams passing under pressure through such small orifices,

have a tendency to enla tolerance. of the present invention t ratus by the use of which definitely determine the It is therefore one of rge the same past the objects 0 provide an'appa it is possible to aggregate areaof the openings, and hence the average area of any individual opening.

It is further apparentthat, if the several filaments extruded are to be partially dried and hardened preliminary to twisting into a thread or strand, the several filaments must from the nozzie or at least uniformly center, as,- if any an angle, caused by an imperfect,

ration, the angular with the straight filaments causing an imperfection.

A further feature is to the detect-ion of such imperfectly perforated provide means for spinnerets and warrant their IGJBClliOIl.

Another aim is in the tecting and calibrating provision of a de apparatus that is simple and efiicient in performance of its purpose and rapid in operation,

extremely accurate in its while being results.

These and like objects are accomplished by the novel construction, combination and arrangement of parts hereinafter described and shown in the accompanying drawings, forming a material. part of this disclosure, Ell'lCl lll Whiche 1 general in elevational view .and provided 7, 1925 Serial No. 1,124.

of a complete embodiment of the apparatus. Figure 2 is a partial plan view of the spray head testing means, looking from line 2 2 of Fig. l and drawn to an enlarged scale.

Figure 3 is a similarly enlarged fragmen tary front view looking from line 3-3 of Fig.1.

Figure 4 is a partial side elevational, partial sectional view of one of the heads show? .ing it as attached to the testing device.

Figure 5 is a partial side elevational view of the individual registering devices, Iook-- ing on line 5-5 of Fig. 1.

Figure 6 is a transverse sectional View, taken on line 66 of Fig. 5, and showing the electrically actuated registering means.

Referring now more in detail to the drawings; the numeral 10 (see Fig. 1) designates a pipe leading from a source of water supply with control means, not shown, the pipe entering a filter 11 of any preferred type, as it is strictly essential that the water be free from any matter in suspension.

Leading from the filter is a pipe 12, its revcrsely curved end overhanging a tank 13 into which it discharges, this tank being supported at such height above the apparatus as to produce a uniform head or pressure in a vertical pipe 14 communicating with the tank and provided with a control valve 15.

The pipe 14 is connected in anyconvenient manner, as by the elbow and nipple shown, to a header 16, extending longitudinally of the apparatus, and provided with a drip cock 17 for drainage and elimination of any possible sedimentation. 1

A plurality of curved pipes 18, bent in the manner of return bends are fixed in the header 16 at predetermined uniform spaceddistances apart, their arched curves being upward, and fixed at their opposite ends are hollow heads 19 to which the spinnerets 20 are removably engaged.

Thespinneret 20, as shown, consists of a short closed cylinder 21 having in its end wall a group end being provided with a flanged base 23, held against a gasket 24 fitting a recess in the lower, level side of the head 19, against which the flange is forcibly clamped by the annular flange25 of a ring 26, provided with spanner wrench receiving openings 27, this ring ing open, angularly turned-slots seer of fine perforations 22, its'opposite ill joint formation to engage pins 29 set rigidly in the head and which furnish means to quickly and securely attach or detach the ring and consequently the spinneret.

At some distance below the heads 19 is a permanent basin 30 having a curved upstanding rear edge 31, a trough shaped portion 32 and a raised front wall 83, this basin extending throughout the lengths of the apparatus and being connected with a drain pipe for discharge of its contents.

Above the level portion of the basin is a fixed frame 3 1- inwhich are rotatably mounted pintles 35, one of them being provided with an operating lever handle 36.

Supported at its ends on the pintles 35 is an open rectangular frame 37, in which are secured a series of elongated rectangular beaker tanks 38 having small pouring spouts 89 at their openupper ends, the centers of these tanks being directly below and in register with the heads 19, as best seen in Fig. 1.

Fixed on the inner side of one of the walls of each tank 38, are a pair of brackets 1O and 41, respectively upper and lower, and

freely slidable in the-projecting portions of the brackets'is a rod .2 to which is secured a float 13 near its lower end to normally rest upon the brackets &1.

A stop collar 141 is fixed on the rod near its 'upper end to strike against the bracket 10,

preventing disengagement when the float rises, in inclining the tank or otherwise. An electrical terminal contact is fixed on the upper extremity of the rod to move up and down with it in electrical engagement with the tank.

' Carriedby the fixed frame 3 1, above and at the rear of the row of tanks 38, is a bar- 16, supporting a plurality of terminals or contacts 17 insulated by washers 37 and in register with the terminals 45, sov that as the tanks become filled, the floats will automatically close an electric circuit, one pole of which is diagrammatically indicated at 48, and connected in parallel to each tank by means of the frame 37 and its associated members, the other pole, indicated at 19, being similarly electrically connected independently to the insulated terminals 47, current being obtained from any convenient source of electrical energy, as the battery shown.

At any place accessible for inspection by an operator, is a fixed support frame having longitudinal and transverse members and including housings 51 for a centrally located horizontal shaft 52 driven at a relatively slow but regular rate of speed by a pulley 53 on which is trained a chain or belt 54, actuated by means not shown.

Secured to the frame 50, and parallel to the shaft 52, are a pair of longitudinally extending plates 55 and 56, on which are fixed guides or slide-ways 57, arrangedin opposed staggered relation transversely of the plates,

into, and are actuated by cams and 61 fixed appropriately on the shaft 52; the lower row of registers 59 are normally held in operative position by the hooked ends 62 of bell-crank lever arms 63, pivoted at 64 to extend substantially vertical, their horizontal arms 65 extending rearwardly as best seen in Fig. 6.

The upper row 58 of registers are supported and held against hooks 66 by springs 67, the hooks being part of bell-crank lever arms 68 pivoted at 69, and having rearwardiy extending arms 70, to which are attached springs 71, for the purpose of normally maintaining the hooks 66 in engagement with the registers 58.

A plurality of electi'o-magnets 72 are supported in a horizontal plane, directly rearward of the shaft 52, these magnets attracting the arms 65'and 70, in the manner of arm'atures, when the magnets are energized upon receiving current by the conducting wire 19, the magnets being connected in parallel.

From the foregoing, it will be understood that upon the rise of water in any individual tank to its predetermined level, the corresponding electro-inagnet will be energized, drawing its armature lever'against it, releasing the register held by its vertical arm and permitting it to move into a disengaged position relative to its eccentric driver.

In operation, the tank 18 Jismaintained filled with pure filtered water, the spinnerets secured to the heads 19, and the lever 36 moved to incline all of the several tanks 38 forwardly on the axis 35, as shown in the broken lines in Fig. 1.

'Thereupon the valve 15 may be opened, allowing the header 16 to become filled with water i from the tank 3, which flowing through the arcuately bent pipes 18, is dispersed in minute streams through the orifices in the spinnerets 20, as may be seen in the Fig. 1.

Careful visual examination of the small determine whether they issue and fall substantially parallel to be received on the rear surfaces of'the tanks or upon the basin 30 to be carried off bythe trough 32. i

If one or more streams or jets are delivered at an angle relative to the others, so as to cross or mingle with them, this condition is readilydetected; also should any opening in the spinneret be other, than round, have imperfect edges or other irregularities, it is easily seen and the imperfect spinneret removed as rejected and another substituted, this operation being repeated until all of the spinnerets in the row have successfully passed examination.

it is to be understood that the adjustment of the rod and float 43 is such that a definite quantity of water in the tank will. close the electric contacts to actuate the electro-magnets 72 as each tank attains its predetermined amount of liquid, and this setting isconstant for all spinnerets accreeited as having the same size openings.

l he lever 36 being operated to raise the tanks into an uprightposition, all of the several jets or sprays from the spinneret individually assigned to each tank will be deliv ered therein.

As the shaft 52 rotates steadily at a known number of revolutions per minute, driving the registers uniformly when in operative engagcment with the cams or eccentrics, the difference of readings of the registers, from the moment the tanks are moved into a receptive position, to the time of their automatic disengagement by the eleetro-magnets indicates the time in filling each tank to its standard capacity.

It will therefore be evident that the tank first filled is fed by a spiuneret having relatively large orifices, while the tank last to be filled must necessarily be fed through a spinneret having smaller orifices, thus permitting a practical calibration of each spinneret, so that a selection having substantially uniform orifices may be readily and accurately made.

Although I have described my improvements with considerabledetail and with respect to certain particular forms of my invention, I do not desire to be limited to such details since many changes andmodifications may well be made without departing from the spirit and scope of my invention in its broadest aspect.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. An apparatus for ascertaining the uniformity of the combined area of a group of orifices in a plurality of perforate objects, comprising a liquid holding tank, object engaging heads adapted to be supplied with liquid from said tank, means for engaging one of the objects to each head to receive liquid therefrom, individualreceiving each object tested, and float controlled means associated with each receiving tank for indicating the reception of a predetermined quantity of liquid therein.

2. An apparatus for ascertaining the uniformity of the combined area of groups of oriflees in a plurality of perforate objects, comprising a plurality of hollow heads supplied with liquid under uniform pressure, each head tanks one for adapted to have a single object attached thereto, an individual receiving tank to catch the flow through each object, a float in each receiving tank, saidfloat having a vertical rod slidably mounted, a her over all of said tanks, insulated contacts carried by said bar in register with said rods to form circuits when in engagement, an electromagnet in each circuit, a counting register for each tank, means to actuate said registers, said registers being normally disengaged from the actuating means, pivotally mounted armaturesprovided with means to hold the registers in engagement with the register actuating means, said armatures being adapted to he moved when the electromagnets are energized to release the registers from engagement with the register actuating means.

3. Anapparatus for comparative calibration of the aggregate areas of grouped apertures in perforated objects, comprising means for supplying each object with liquid under a uniform pressure, tiltably mounted individual tanks one to receive the outflow of each ob- 'ect, a float in each tank, means controlled by said float to indicate the reception of a predetermined quantity of liquid entered into the tank, and means for tilting all of said tanks collectively into or out of receiving position.

l. An apparatus for comparative calibration of the aggregate areas of grouped apertures in perforated objects, comprising means for supplying each object with liquid under a individual tiltable tanks one to receive the dischargeof each object, means including a float and rod to indicate the reception of a predetermined quantity of liquid in each tank when upright, a basin below said tanks, said basin having a discharge means, and means to tilt all of said tanks collectively into an upright receiving position or to tilt them so as to discharge their contents into said basin.

5. An apparatusfor comparative calibration of the aggregate areas of grouped apertures in perforated objects, comprising means for supplying each object with liquid under a uniform pressure, individual tanks one to receive the outflow of each object, a shaft uniform pressure,

driven at a definite uniform speed rate, a

counting register for each tank, means forreleasably'holding each register in position to be actuated by the shaft, electromagncts to release said holding means, an electric circuit to energize said. electromagnets, and means carried by said tanks to make and. break the electric circuit. I

This specification signed this 30th day of December, 1924:,

KURT K. LEDIG. 

